github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-06-21 13:08:42 +00:00
Code Issues Projects Releases Wiki Activity

config-tools: allocate the first unused bar for vmsix

Browse Source 
A vmsix supported passthrough device expects the first unused bar region
for vmsix. Pop the first unused_bar_index in gpa.py instead.

Reference code: init_vmsix_on_msi of hypervisor\dm\vpci\vmsix_on_msi.c

Tracked-On: #6192
Signed-off-by: Yang,Yu-chu <yu-chu.yang@intel.com>
This commit is contained in:
Yang,Yu-chu 2021-06-10 07:42:39 -07:00 committed by wenlingz
parent cc45a94d82
commit 19f8bd7a06
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
misc/config_tools/static_allocators/gpa.py
View File

@ -137,6 +137,12 @@ def insert_pt_devs_to_dev_dict(board_etree, vm_node_etree, devdict_32bits, devdi
devdict_64bits[(f"{dev_name}", f"{bar_region}")] = int(bar_len, 16) devdict_64bits[(f"{dev_name}", f"{bar_region}")] = int(bar_len, 16)
def insert_vmsix_to_dev_dict(pt_dev_node, devdict): def insert_vmsix_to_dev_dict(pt_dev_node, devdict):
"""
Allocate an unused mmio window for the first free bar region of a vmsix supported passthrough device.
1. Check if this passtrhough device is in the list "KNOWN_CAPS_PCI_DEVS_DB" of "VMSIX" suppoeted device.
2. Find the first unused region index for the vmsix bar.
3. Allocate an unused mmio window for this bar.
"""
vendor = common.get_node("./vendor/text()", pt_dev_node) vendor = common.get_node("./vendor/text()", pt_dev_node)
identifier = common.get_node("./identifier/text()", pt_dev_node) identifier = common.get_node("./identifier/text()", pt_dev_node)
if vendor is None or identifier is None: if vendor is None or identifier is None:
@ -152,7 +158,7 @@ def insert_vmsix_to_dev_dict(pt_dev_node, devdict):
used_bar_index = set(bar_32bits_idx_list + bar_64bits_idx_list_1 + bar_64bits_idx_list_2) used_bar_index = set(bar_32bits_idx_list + bar_64bits_idx_list_1 + bar_64bits_idx_list_2)
unused_bar_index = [i for i in range(6) if i not in used_bar_index] unused_bar_index = [i for i in range(6) if i not in used_bar_index]
try: try:
next_bar_region = unused_bar_index.pop() next_bar_region = unused_bar_index.pop(0)
except IndexError: except IndexError:
raise lib.error.ResourceError(f"Cannot allocate a bar index for vmsix supported device: {vendor}:{identifier}, used bar idx list: {used_bar_index}") raise lib.error.ResourceError(f"Cannot allocate a bar index for vmsix supported device: {vendor}:{identifier}, used bar idx list: {used_bar_index}")
address = common.get_node("./@address", pt_dev_node) address = common.get_node("./@address", pt_dev_node)